I have had the honor to give a talk at this year's froscon in the lisp subconference #quasiconf track. I talked about doodle and the available gaming "frameworks" in chicken scheme for the interested game programmer while showing how to program an asteroids clone called beesteroids.
I would like to thank everyone attending and asking all these questions. I have been told that the video recording of this talk will be out shortly. Meanwhile here are the slides (pdf). Also the example code can be found on my bitbucket repo.
If you have attended the talk, please leave some feedback at the froscon site or send me your thoughts via other means.